#ifndef __vasprintf_compat_h
#define __vasprintf_compat_h

/**
 * @file
 * @brief Do not use, json-c internal, may be changed or removed at any time.
 */

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>

#include "config.h"

#if !HAVE(VASPRINTF)
/* CAW: compliant version of vasprintf */

static int vasprintf(char **buf, const char *fmt, va_list ap)
    __attribute__ ((format (printf, 2, 0)));

static int vasprintf(char **buf, const char *fmt, va_list ap)
{
#ifndef WIN32
    static char _T_emptybuffer = '\0';
#endif /* !defined(WIN32) */
    int chars;
    char *b;

    if (!buf)
    {
        return -1;
    }

#ifdef WIN32
    chars = _vscprintf(fmt, ap) + 1;
#else  /* !defined(WIN32) */
    /* CAW: RAWR! We have to hope to god here that vsnprintf doesn't overwrite
     * our buffer like on some 64bit sun systems.... but hey, its time to move on
     */
    chars = vsnprintf(&_T_emptybuffer, 0, fmt, ap) + 1;
    if (chars < 0)
    {
        chars *= -1;
    } /* CAW: old glibc versions have this problem */
#endif /* defined(WIN32) */

    b = (char *)malloc(sizeof(char) * chars);
    if (!b)
    {
        return -1;
    }

    if ((chars = vsprintf(b, fmt, ap)) < 0)
    {
        free(b);
    }
    else
    {
        *buf = b;
    }

    return chars;
}
#endif /* !HAVE_VASPRINTF */

#endif /* __vasprintf_compat_h */
